Home / 3,153.81-4,354.07-2,185.45

Finding the Fourth Proportional to 3,153.81, 4,354.07 and 2,185.45

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Solution

The fourth proportional to 3,153.81, 4,354.07 and 2,185.45 is: 3,017.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.81 : 4,354.07 = 2,185.45 : x
  2. Step 2: Convert to fraction form
    3,153.81/4,354.07 = 2,185.45/x
  3. Step 3: Cross multiply
    3,153.81x = 4,354.07 × 2,185.45
  4. Step 4: Simplify right side
    3,153.81x = 9,515,602.28
  5. Step 5: Solve for x
    x = 9,515,602.28/3,153.81
  6. Step 6: Final answer
    x = 3,017.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.